body{
	padding: 0;
	margin: 50px;
}

div{
	float: left;
}

.poster-main{
	width: 800px;
	height: 300px;
	position: relative;	
}

.prebtn{
	height: 100%;
	opacity: 0;
	position: relative;
	top: 0px;
	left: 0px;
}

.btn img{
	opacity: 0.5;
}

.poster-item img{
	width: 100%;
	height: 100%;
}

.nextbtn{
	height: 100%;
	opacity: 0;
	position: absolute;
	top: 0px;
	right: 0px;
}

.poster-list{
	margin: 0px;
	padding: 0px;
	position: absolute;
	top: 0px;
	left: 0px;
}

.poster-item{
	position: absolute;
	top: 0px;
	list-style-type: none;
}